picusb.c

giao tiep PIC USB. Pham Trieu

/////////////////////////////////////////////////////////////////////////
////                            PicUSB.c                             ////
////                                                                 ////
//// Le Cong Cuong - 1/12/2008              [e-mail]  ////
////                                                                 ////
//// http://lecongcuong.blogspot.com                                 ////
/////////////////////////////////////////////////////////////////////////
#include <18F4550.h>
#device *=16 adc =10
#fuses HSPLL,NOWDT,NOPROTECT,NOLVP,NODEBUG,USBDIV,PLL5,CPUDIV1,VREGEN
#use delay(clock=48000000)

/////////////////////////////////////////////////////////////////////////////
//
// CCS Library dynamic defines.  For dynamic configuration of the CCS Library
// for your application several defines need to be made.  See the comments
// at usb.h for more information
//
/////////////////////////////////////////////////////////////////////////////
#define USB_HID_DEVICE     FALSE             //
#define USB_EP1_TX_ENABLE  USB_ENABLE_BULK   //turn on EP1(EndPoint1) for IN bulk/interrupt transfers
#define USB_EP1_RX_ENABLE  USB_ENABLE_BULK   //turn on EP1(EndPoint1) for OUT bulk/interrupt transfers
#define USB_EP1_TX_SIZE    2                 //size to allocate for the tx endpoint 1 buffer
#define USB_EP1_RX_SIZE    3                 //size to allocate for the rx endpoint 1 buffer


/////////////////////////////////////////////////////////////////////////////
//
// If you are using a USB connection sense pin, define it here.  If you are
// not using connection sense, comment out this line.  Without connection
// sense you will not know if the device gets disconnected.
//       (connection sense should look like this:
//                             100k
//            VBUS-----+----/\/\/\/\/\----- (I/O PIN ON PIC)
//                     |
//                     +----/\/\/\/\/\-----GND
//                             100k
//        (where VBUS is pin1 of the USB connector)
//
/////////////////////////////////////////////////////////////////////////////
//#define USB_CON_SENSE_PIN PIN_B2  //CCS 18F4550 development kit has optional conection sense pin

/////////////////////////////////////////////////////////////////////////////
//
// Include the CCS USB Libraries.  See the comments at the top of these
// files for more information
//
/////////////////////////////////////////////////////////////////////////////
#include <pic18_usb.h>     //Microchip PIC18Fxx5x Hardware layer for CCS's PIC USB driver
#include <PicUSB.h>         //Configuraci髇 del USB y los descriptores para este dispositivo
#include <usb.c>           //handles usb setup tokens and get descriptor reports
#include <lcd.c>


#define LED0    PIN_A5
#define LED1    PIN_B5
#define LED2    PIN_B4
#define LED3    PIN_B3
#define LED4    PIN_B2
#define LED_ON  output_high
#define LED_OFF output_low


#define statusLED LEDptr[0]
#define mode      receive[0]
#define LCDlegth  receive[1]



void main(void) {

   
   int8 receive[33];
   int8 LEDptr[1];
   int8 ADCptr[2];
   int16 adc;
   int8 i =0;

   set_tris_b(0x00);
   output_b(0x00);
   set_tris_a(0x00);
   setup_adc(ADC_CLOCK_INTERNAL); 
   setup_adc_ports(AN0_ANALOG);
   set_adc_channel(0);
   
   lcd_init();
   lcd_putc("\fLe Cong Cuong 3I\nPIC USB example!");
   
   
   usb_init();                      //initialize the USB

   usb_task();                      //enables USB peripherals and interrupts
   usb_wait_for_enumeration();      //wait until the PicUSB be configured by the host

   LED_ON(LED0);

   while (TRUE)
   {
      if(usb_enumerated())          
      {
         if (usb_kbhit(1))          
         {
            usb_gets(1,receive,34,USB_DTS_TOGGLE);

            if (mode == 2)
            {
               output_b(receive[1]);
               statusLED = receive[1];
               usb_put_packet(1, LEDptr, 1, USB_DTS_TOGGLE); 
            }
            if (mode == 3)
            {
               lcd_putc("\f");
               for (i=2;i<LCDlegth+2;i++)
               { 
                  if (i == 18)
                  {
                     lcd_gotoxy(1,2);
                     lcd_putc(receive[18]);
                  }
                  else lcd_putc(receive[i]);
               }
            }
            if (mode == 4)
            {
               adc = read_adc();
               ADCptr[1] = (int8)(adc & 0xFF);
               ADCptr[0] = (int8)((adc >>8)&0xFF);
               usb_put_packet(1,ADCptr,2,USB_DTS_TOGGLE);
            }
         }
      }
   }
}